diff --git a/src/ObjectDataMapper.php b/src/ObjectDataMapper.php
index 6a9fe33..27b4d20 100644
--- a/src/ObjectDataMapper.php
+++ b/src/ObjectDataMapper.php
@@ -13,7 +13,7 @@ use Rmphp\ODM\Attribute\ValueObject;
 use Rmphp\ODM\Attribute\ValueObjectFirstProperty;
 use Rmphp\ODM\Attribute\ValueObjectPropertyName;
 
-abstract class ObjectDataMapper extends AbstractObjectData {
+class ObjectDataMapper extends AbstractObjectData {
 
 	/**
 	 * @param object $object